Learn 是 + ... and 在 + place through Asking About Work and School.
Examples
他的工作很好。
His job is very good.
我在公司工作。
I work at a company.
Examples
我去学校。
I go to school.
Examples
我很高兴。
I am very happy.
S + 是 + ...Use '是' (shì) to link the subject with a noun or noun phrase, expressing 'who is who' or 'what is what.' This is the most basic affirmative sentence structure in beginner Chinese.
她是老师。
She is a teacher.
这是我上班的地方。
This is where I work.
S + 在 + 地点Use '在' (zài) after the subject to indicate where a person or thing is. The location can be a school, company, home, and so on. This structure is often used to answer the question 'Where are you?'
他在学校。
He is at school.
爸爸在上班。
Dad is at work.
Two old friends meet again.
你好！你是老师吗？
Hello! Are you a teacher?
不是，我不是老师。我是学生。
No, I'm not a teacher. I'm a student.
你在哪儿上学？
Where do you go to school?
我在这个学校上学。
I study at this school.
你认识她吗？她在那儿工作。
Do you know her? She works over there.
认识。她在那儿上班。她很忙。
Yes. She works there. She's very busy.